package reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;
import reggie.common.R;
import reggie.entity.Employee;
import reggie.service.EmployeeService;
import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping(value = "/employee",produces = {"application/json;charset=UTF-8"})
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        //SFunction<Employee, String> getUsername = Employee::getUsername;
        //reggie.controller.EmployeeController$$Lambda$634/17986843@7c5717a8
//        System.out.println(getUsername);
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败！");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误！");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用！");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("logout")
    public R logout(HttpServletRequest request) {
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功！");
    }

    /**
     * 添加员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee) {

        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        employee.setCreateUser((Long)request.getSession().getAttribute("employee"));
//        employee.setUpdateUser((Long)request.getSession().getAttribute("employee"));

        employeeService.save(employee);

        return R.success("添加成功！");
    }

    /**
     * 分页展示员工信息
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {}, pageSize = {}, name = {}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id查询员工信息(也可用于更新操作的回显)
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息...");

        Employee employee = employeeService.getById(id);

        if (employee != null) {
            return R.success(employee);
        }

        return R.error("没有查询到用户");
    }

    /**
     * 修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee) {
        log.info(employee.toString());

        employeeService.updateById(employee);

        return R.success("修改员工信息成功！");
    }


}
